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morghen
Joined: 21 Jan 2005 Posts: 8884 Location: Romania
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Posted: Sun Oct 01, 2017 3:07 am Post subject: Allowed injector fuel delivery difference? |
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Chasing an issue on high boost and high rpm, 1.1bar and above 4500rpm only happening at wot, at 75% pedal its nice and smooth.
So i tested the injectors today...the pattern is a bit dodgy but nothing catastrophical...i was looking for some clear indications but found little until now.
1 and 4 put out about 7-8% less fuel than 2 and 3.
1: 245g
2: 262g
3: 257g
4: 244g
I'd have to check if amount drops or stops climbing with higher plate lift.
Opinions? _________________ https://www.the924.com |
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gerben1986
Joined: 13 Mar 2008 Posts: 232 Location: The Netherlands
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Posted: Sun Oct 01, 2017 3:59 am Post subject: |
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I remember that in the Haynes is stated what the allowed difference in fuel delivery is.
But I don't have the Haynes overhere at the moment. Maybe you could have a look overthere? _________________ 911SC - 1980 |
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morghen
Joined: 21 Jan 2005 Posts: 8884 Location: Romania
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Posted: Sun Oct 01, 2017 5:42 am Post subject: |
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Thanks, i had a haynes but managed to loose it
I'll have a look on the internets. _________________ https://www.the924.com |
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924-76
Joined: 05 Jun 2006 Posts: 1475 Location: Ontario, Canada
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Posted: Sun Oct 01, 2017 12:06 pm Post subject: |
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The info in the Haynes manual ( page 78 ) is for the N/A and mentioned to run the 4 injector until 1 reach 100 cc and then the other 3 should have more than 85 cc.
So, no more than 15% between the highest and lower.
You have 6.9% difference between the highest and lower, sounds good to me.
BTW, let me know if you are looking for a set of factory manual, including the turbo manual. _________________ 1976 924 N/A ROW SOLD
1980 931S
1981 931 Part car RIP |
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